Clamping crew with a ball in the end for use in an electrical terminal

摘要

A clamping screw 2 used for fastening an electrical conductor in a tubular metallic terminal, where the terminal has a threaded hole in its upper wall and the threaded hole is designed to receive the clamping screw 2. The clamping screw 2 has a hemispherical recess at its end and the recess contains a freely rotating ball 10 which projects beyond the end of the screw 2 when the screw is in use. The diameter of the recess at the end of the clamping screw 2 corresponds to the diameter of the ball 10.